According to DNA Info (via SOHH), Gissendanner was shot in the back of the head on the Far South Side on January 2nd. The aspiring rapper was killed in a car near 124th Street and South Ave. while visiting his uncle in West Pullman. He later died at Roseland Hospital.

Alfonso Cozart, who claims to be Keef's biological father, was stepfather to Gissendanner, whose rap name was YPN Boomtown. Keef was related to Gissendanner through marriage.

Cozart, who no longer speaks with Chief Keef, said that Gissendanner's murder makes him worry about Keef's well being. “As a caring father, who wouldn’t worry about that?” Cozart asked. “I do want my son to have success and have a long, positive life, and I hope the best for him.”

He added that he doesn't want Keef's fame to overshadow Gissendanner's passing. "He just graduated high school, and was in college and had a job. He was a positive person,” Cozart said. “I’m not trying to get publicity of Chief Keef being my son. I want you to focus on Ulysses. He’s the one that’s gone.”

This marks yet another recent death for Chicago teens due to gunfire. Keef's alleged enemy Lil JoJo lost his life at 16, while Joshua was murdered at 18 years old, both late last year.